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<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>What does the mass density and frequency scale mean??</title><link>https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/222823/what-does-the-mass-density-and-frequency-scale-mean</link><description>Hello, 
 I am doing a dynamic analysis of an experimental work which include couple of lines I could not understand . Any one can explain what does those highlighted parts in the attached image mean?</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: What does the mass density and frequency scale mean??</title><link>https://communities.bentley.com/thread/685565?ContentTypeID=1</link><pubDate>Sat, 04 Dec 2021 00:12:12 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:d2990e7e-1dcf-41b8-9a98-9b6d66c6c0a1</guid><dc:creator>Seth Guthrie</dc:creator><description>&lt;p&gt;I have only ever heard that terminology used in reference to string vibration (like a guitar string).&amp;nbsp;For a building structure, Young&amp;#39;s modulus (E) ought to be that of the structural member materials (steel or concrete?) and the mass is based on the dead loads (and maybe also the live loads). But &amp;quot;frequency scale&amp;quot; I can&amp;#39;t fathom in a building dynamic analysis, unless it&amp;#39;s for scaling the response spectrum somehow.&amp;nbsp;&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: What does the mass density and frequency scale mean??</title><link>https://communities.bentley.com/thread/685564?ContentTypeID=1</link><pubDate>Sat, 04 Dec 2021 00:02:35 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:74c02942-7f94-4777-bcd2-8e4bbda939e1</guid><dc:creator>Mereen Hussain</dc:creator><description>&lt;p&gt;I guess the RAM concept tag was by mistake, However, my post is related to dynamic seismic analysis of a building structure. I am following an experimental work and performing its simulation. The author mentioned the above mentioned assumption which I can not understand what it means so looking for someone to explain.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: What does the mass density and frequency scale mean??</title><link>https://communities.bentley.com/thread/684921?ContentTypeID=1</link><pubDate>Tue, 30 Nov 2021 20:21:57 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:53d0a280-d494-4b8e-8bf7-8e884a92c6ad</guid><dc:creator>Seth Guthrie</dc:creator><description>&lt;p&gt;Can you provide a broader context? What is the excerpt from? I take it from your TAGS that this pertains to Ram Concept, but the vibration analysis we perform there is a footfall analysis, not a dynamic seismic analysis.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>